How Heat Pumps Work: The Refrigeration Cycle, Reversing Valves, and Why Efficiency Beats 100%
A heat pump moves heat instead of making it. Here is how the refrigeration cycle, reversing valve, and inverter compressor…
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R-454B and the Refrigerant Transition in 2026: What the Shortage Left Behind
New heat pumps now ship with A2L refrigerants. Here is how the 2025 R-454B shortage played out, why R-410A repairs…